• Wörterbücher-Überblick New from canoo.net. Single search interface to various dictionaries, including LEO
• Das Wörterbuch-Netz New! Grimm, Lexer, regional dictionaries etc
• Wortschatz-Portal Access to German and German-English vocabularies
  
• Wörterbücher und Indices New from Mediaevum.de. Many medieval dictionaries, but New High German too
• German professor: online dictionaries Most useful for listing smartphone dictionary apps
  

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German-only dictionaries

• Duden Wörterbuch online New!
• Digitales Wörterbuch der deutschen Sprache New!
• Deutsches Wörterbuch von Jacob und Wilhelm Grimm

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German-English (etc) dictionaries

• BEOLINGUS: Dictionary (TU Chemnitz) New! German, Spanish and Portuguese to English dictionary, with pronunciations
  
• LEO online dictionary multilingual German dictionary
• PONS: das online-Wörterbuch to English and many other languages
  
• PONS Bildwörterbuch New!

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Special vocabularies

• Online Wörterbuch Jugendsprache New from ATS-Group: interface to several online lexica
  
• Lexikon der Jugendsprache compiled 1997 by Duisburg schoolchildren
• Glossary of Translation and Interpreting Terminology New!
• Redensarten-Index New! Wörterbuch für Redensarten, Redewendungen, idiomatische Ausdrücke, feste Wortverbindungen

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Quotations, reference sources

• www.aphorismen.de Now over 101,000 quotations and aphorisms, 6500 poems etc online. Appears to be the same as zitat.net
• zitate.eu Contains over 200,000 quotations, aphorisms etc
  
  
• Other reference sources, encyclopaedias etc

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